LOCK SCREEN BUG IN 1703

Some machines using Windows 10 version 1703 are having problems with the lock screen not asking for authentication for secure situations. This can lead to unauthorized use from a stolen machine etc. The whole idea of using a PIN is to make the machine more secure.

Right click on the start button and select run, then type

gpedit.msc

Now double click on Administrative Templates, then double click on Control Panel

Now for each item, change them from not configured to disables so that the policy is properly activated. Its not clear why this problem exists only on some machines.